/// <summary>
/// CloseCore - Implemented be derivees to Close the context.
/// This will only be called once (if ever) per instance.
/// </summary>
/// <param name="renderData"> The render data produced by this RenderDataDrawingContext. </param>
protected override void CloseCore(RenderData renderData)
{
Debug.Assert(null != _ownerVisual);
_ownerVisual.RenderClose(renderData);
#if DEBUG
_ownerVisual = null;
#endif
}
/// <summary>
/// Converts a RenderData content representation into a DrawingGroup
/// content representation.
/// </summary>
/// <param name="renderData"> The RenderData to convert </param>
/// <returns>
/// A new DrawingGroup representation that is functionally equivalent to the
/// passed-in RenderData.
/// </returns>
internal static DrawingGroup DrawingGroupFromRenderData(RenderData renderData)
{
//
// Create & open a new DrawingGroup
//
DrawingGroup drawingGroup = new DrawingGroup();
DrawingContext dc = drawingGroup.Open();
//
// Create a DrawingGroup from the RenderData by walking
// the RenderData & having it forward it's base value's
// and animations to DrawingGroup
//
//
// The Drawing tree we're about to produce should not be an inheritance context,
// since that would place all mutable Freezables in the render data into shared
// state, which would in turn case them to lose their inheritance context entirely.
// This is controlled by setting "CanBeInheritanceContext" to false on the
// DrawingContext which will then be applied to all new objects it creates.
//
DrawingDrawingContext ddc = dc as DrawingDrawingContext;
if (ddc != null)
{
ddc.CanBeInheritanceContext = false;
}
DrawingContextDrawingContextWalker walker =
new DrawingContextDrawingContextWalker(dc);
renderData.BaseValueDrawingContextWalk(walker);
//
// Close the DrawingContext & return the new DrawingGroup
//
dc.Close();
return drawingGroup;
}
/// <summary>
/// Converts a RenderData content representation into a DrawingGroup
/// content representation.
/// </summary>
/// <param name="renderData"> The RenderData to convert </param>
/// <returns>
/// A new DrawingGroup representation that is functionally equivalent to the
/// passed-in RenderData.
/// </returns>
internal static DrawingGroup DrawingGroupFromRenderData(RenderData renderData)
{
//
// Create & open a new DrawingGroup
//
DrawingGroup drawingGroup = new DrawingGroup();
DrawingContext dc = drawingGroup.Open();
//
// Create a DrawingGroup from the RenderData by walking
// the RenderData & having it forward it's base value's
// and animations to DrawingGroup
//
//
// The Drawing tree we're about to produce should not be an inheritance context,
// since that would place all mutable Freezables in the render data into shared
// state, which would in turn case them to lose their inheritance context entirely.
// This is controlled by setting "CanBeInheritanceContext" to false on the
// DrawingContext which will then be applied to all new objects it creates.
//
DrawingDrawingContext ddc = dc as DrawingDrawingContext;
if (ddc != null)
{
ddc.CanBeInheritanceContext = false;
}
DrawingContextDrawingContextWalker walker =
new DrawingContextDrawingContextWalker(dc);
renderData.BaseValueDrawingContextWalk(walker);
//
// Close the DrawingContext & return the new DrawingGroup
//
dc.Close();
return(drawingGroup);
}
protected override void OnInitialized(EventArgs e)
{
base.OnInitialized(e);
tileControl.AboutToRender += tileControl_AboutToRender;
tileControl.TileLayoutChanged += tileControl_TileArrangementChanged;
var symbolDrawingCache = new SymbolDrawingCache(new Uri("/Symbols/SymbolInfosGfx.xaml", UriKind.Relative));
tileControl.SymbolDrawingCache = symbolDrawingCache;
m_renderData = new RenderData<RenderTileDetailed>();
tileControl.SetRenderData(m_renderData);
tileControl.TileSize = 32;
m_targetTileSize = tileControl.TileSize;
this.MouseWheel += new MouseWheelEventHandler(MainWindow_MouseWheel);
this.KeyDown += new KeyEventHandler(MainWindow_KeyDown);
CompositionTarget.Rendering += new EventHandler(CompositionTarget_Rendering);
m_timer = new DispatcherTimer(TimeSpan.FromSeconds(1), DispatcherPriority.Normal, OnTimerCallback, this.Dispatcher);
}
/// <summary>
/// CloseCore - Implemented be derivees to Close the context.
/// This will only be called once (if ever) per instance.
/// </summary>
/// <param name="renderData"> The render data produced by this RenderDataDrawingContext. </param>
protected virtual void CloseCore(RenderData renderData)
{
}
/// <summary>
/// EnsureRenderData - this method ensures that the _renderData variable is initialized.
/// The render data's _buffer will be lazily instantiated via the Draw* methods which all
/// call WriteDataRecord.
/// </summary>
private void EnsureRenderData()
{
if (_renderData == null)
{
_renderData = new RenderData();
}
}
/// <summary>
/// CloseCore - Implemented be derivees to Close the context.
/// This will only be called once (if ever) per instance.
/// </summary>
/// <param name="renderData"> The render data produced by this RenderDataDrawingContext. </param>
protected virtual void CloseCore(RenderData renderData) {}
